Use of mixtures based on difluoromethane and on pentafluoroethane as cryogenic fluids in very low temperature refrigeration

摘要

Difluoromethane and pentafluoro methane mixtures as refrigerant fluids for low temperature refrigeration comprise 25 - 50 wt.% difluoromethane and 50 - 70 wt.% pentafluoro methane.